HardLabs

ModularLabPSU

tom-biskupic·LabPSU·KiCAD/ModularLabPSU/ModularLabPSU.kicad_pcb

ModularLabPSU PCB layout, top view — open source AVR/Arduino board by tom-biskupic

About the ModularLabPSU PCB

ModularLabPSU is an open source AVR/Arduino PCB design by tom-biskupic, published on GitHub. It is a 2-layer board measuring 128 × 80 mm, with 140 components from 72 distinct parts.

Its main chip is the ATMEGA328P-A, from the AVR/Arduino family. Other key parts include the LT1639, AD7705BRUZ, AD780BRZ, AD5689 and ADUM1201ARZ-RL7. By type, the board carries 54 resistors, 34 capacitors, 16 diodes, 15 ICs, 9 transistors and 4 connectors.

It belongs with the power & battery designs in this gallery.

From the project

Open Source Lab Power Supply

This project is to create an open source modular lab power supply. The power supply is designed to:

Provide between 0-15V @ 5A and 15-30V @ 3A Provide current limiting Voltage to be settable to within 1mV and current limit to 1mA resolution. Voltage/current readback to 1mV and 1mA with low temperature drift. Limit heat loss through the use of a pre-regulator. The pre-regulator uses an SCR and MOSFET arrangement to reduce noise (switches at a low frequency) Digitally controllable via a Raspberry PI and touch-screen interface. Multiple channels (designed for 3). Each channel is isolated and…

Main components on the ModularLabPSU

ATMEGA328P-ALT1639AD7705BRUZAD780BRZAD5689ADUM1201ARZ-RL7MCP2200LTC2050LM317HVTLM317ATSCRLT1716

ModularLabPSU bill of materials (BOM)

140 components, 72 distinct parts.

QtyPartRefs
1
ATMEGA328P-A
IC1
2
LT1639
U1, U7
1
AD7705BRUZ
U2
1
AD780BRZ
U3
1
AD5689
U4
1
ADUM1201ARZ-RL7
U5
1
MCP2200
U6
2
LTC2050
U8, U14
1
LM317HVT
U9
2
LM317AT
U10, U11
1
SCR
U12
1
LT1716
U13
5
BC847B
Q1, Q3, Q4, Q7, Q9
1
IRFP044N
Q2
2
IRFP5210
Q5, Q6
1
BC857
Q8
1
20MHz
X1
1
12MHz
X2
1
2MHz
Y1
1
USB_MINI_B_OTG
J1
Show 52 more
QtyPartRefs
1
CONN_01X04
P1
1
CONN_01X06
P2
1
EarthWire
P3
1
5A PTC
F1
1
HF115F
K1
2
VR
VR1, VR2
3
1N4148WS
D1, D2, D16
2
1N4007
D3, D5
1
18V
D4
1
DF06M
D6
1
Diode_BridgeGBJ106
D7
6
D
D8, D11, D12, D13, D14, D15
1
DDZ18CSF-7
D9
1
3V3
D10
1
220 Ohm Ferrite
L1
4
10uF
C1, C8, C11, C28
17
0.1uF
C2, C3, C4, C5, C6, C9, C10, C13 +9
1
1uF
C7
2
10nF
C12, C14
2
1nF
C20, C29
1
4.7pF
C21
1
100pF
C22
1
100p
C23
2
4700uF
C24, C25
1
200uF
C27
2
20pF
C31, C32
4
100R
R1, R39, R40, R49
1
10m
R2
11
10K
R3, R6, R21, R29, R43, R44, R46, R50 +3
2
2K
R4, R7
3
4K7
R5, R15, R48
2
4.7K
R8, R54
4
100K*
R9, R12, R14, R19
1
47K
R10
1
2K2
R11
4
22K
R13, R55, R56, R57
2
5K1
R17, R22
1
5.1K
R18
1
4K7
R23
1
10R
R24
4
1K
R25, R30, R37, R38
2
240R
R27, R34
1
6K2
R28
1
2.2K
R31
1
240
R32
1
4K3
R33
1
680R
R35
1
47R
R36
1
470K
R41
1
3K3
R42
1
220R
R45
1
330K
R47

ModularLabPSU design files

The KiCad project lives in the tom-biskupic/LabPSU repository on GitHub; these links point at the commit this page was built from.

ModularLabPSU: common questions

What microcontroller does the ModularLabPSU use?

The ModularLabPSU is built around the ATMEGA328P-A, from the AVR/Arduino family.

How big is the ModularLabPSU PCB?

The ModularLabPSU measures 128 × 80 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ModularLabPSU?

140 components, from 72 distinct parts. The full bill of materials is listed on this page.

Where can I download the ModularLabPSU design files?

From the tom-biskupic/LabPSU repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the ModularLabPSU design in my own project?

The repository has no license, so all rights stay with tom-biskupic. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the ModularLabPSU without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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